Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
3rd March 2022
- 1Best Buy Questions3 marks
A pack of 4 teabags costs £1.40. A pack of 16 costs £4.80. Which pack is better value?
- 2Vectors2 marks
a is the column vector (-7, 1) and b is (-7, -7). Work out a + b as a column vector.
- 3Probability Trees3 marks
3 of 6 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 4Averages from Frequency Tables2 marks
Grouped data has five classes of width 5, the first being 5 < x <= 10. The frequencies in order are 16, 11, 3, 7, 21. Write down the modal class.
- 5Error Intervals2 marks
A number y is 34 when truncated to the nearest whole number. Write down the error interval for y.
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